Rowlock



(No Model.)

- J. EDSON.

IROWYLOOK. -No. 293.858, Patented Feb. 19,1884;

, x f n w h m a W,

I 4 M w m r n figffi e 5 s a 5 4 Unrrnn STATES PATENT Grrrrhra 'JAcoB nnson, on BOSTON, ASSIGNOR or ONE-HALF TO EMILY L. cALn- WELL, on HYDE PARK, MASSACHUSETTS.

ROWLOCK.

SPECIFICATION forming part of Letters Patent Iva-293,858, dated February 19, 1884.

' Application filed June 18, 188 3. (No model.)

To all whom it may concern: 1

Be it known that I, J AOOB EDsoN, a citizen of the United States, residingat Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Rowlocks; and I do hereby declare that the same are fully described in the following specification and illustrated in the -accomshown in Fig. 2, and Fig. 4, represents a crosssection on the line A 13, shown in Fig. 2.

Similar letters refer to similar parts whereever they occur on'the-different parts of the drawings. L I

(t represents the forked upper end of the rowlock, in one piece with which is cast the downwardly-projecting tapering shank a, as shown. In rowlocks of this kind the greatest amount of strain comes at the junction of the forked part a and its shank a, and to prevent its accidental breakage I cast in one piece with it at this point a'circular projection or collar, to, which serves as a trunnion or journal, on which the rowlock turns in its bear ing while in use, and on which the lateral strain is transferred while rowing. The rowlock is supported in a bearing-piece secured to the rail of the boat, to which -it is locked while in use, with freedom to turn around its axis, and from which it may easily be detachable when no longer required for' use. The said bearing-piece is composed of the plate I),

which is let in in the upper part of the rail 0,

as shown, and secured firmly theretoby means of suitable fastening-screws, as usual. To the .under side of the plate I) is cast in one piece the downwardly-projecting tapering sleeve 12, having in its interior a cut-away portion or groove, b extending on one side from top to bottom of said sleeve, as shown A corresponding side projection, a is made on the shank'a, by which means the said shank can be put through the slotted sleeve 1) when the forked piece a is held at a right angle, or nearly so, to the rail 0, and prevented from being accidentally disconnected as soon as the rowlock is turned around its axis to the required working position. By making tlie slot b extending throughout the entire length of the sleeve 1), I am enabled to cast said bearingpiece without the need of a core, and thus cheapen the manufacturethereof considerably. In one piece'with' the plate I) is cast the annular bearing-ring 22 that is made to project above the plate I), as shown, its interior serv which a very neat finish is obtained when the plateb is let in and secured in place on its rail 0, as shown. lar a at the upper end of the shank a the latter can be reduced in size, so that the same size shank may be used for different size rowlocks, andv consequently the same sockets or bearing-pieces may be used. for different-size rowlocks, which is of great advantage in using long or short oars interchangeably, as 0ocasion may require. The upper end of the sleeve 2) is made with a rounded edge corresponding to the rounded junction of collar a, with shank a, as shown, by which great strength and freedom of action is'obtained without liability of binding when in use.

Having thus fully described the nature, con struction, and. operation of my invention, I wish to secure by Letters Patent and claim- 1. The combination of the forked piece a, tapering shank a, enlarged collar a, and locking projection aflwith the socket consisting of plate I), tapering sleeve 1), having ver- By having the enlarged coltical groove I), and upper annular bearingring, 1), adapted to receive the collar (0 in a I all combined and arranged as and for the purlnanner substantially as and for the purpose pose set forth. 10 set forth. In testimony whereof I have affixed my sig- 2. The hereinwlescribed bearing-piece or nature in presence of two witnesses. socket for rowlocks, consisting of plate Z),witl1 JACOB EDSOX. its downwardly-projeating tapering sleeve 1), \Vitnesses: having internal vertical groove, 1), in combi- ALBAN ANDRI'JN,

nation with upper annular bearing-ring, b, HEXRY CHADBOURN. 

